#!/bin/bash

# This file is part of util-linux.
#
# This file is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This file is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

TS_TOPDIR="${0%/*}/../.."
TS_DESC="setarch"

. $TS_TOPDIR/functions.sh
ts_init "$*"

ts_check_test_command "$TS_CMD_SETARCH"

ARCH=$(uname -m)

ts_init_subtest options
test -e /.dockerenv && ts_skip "unsupported in docker environment"
ts_log_both "###### unknown arch"
$TS_CMD_SETARCH qubit -v echo "success" >> $TS_OUTPUT 2>> $TS_ERRLOG
echo "exit: $?" >>$TS_OUTPUT

ts_log_both "###### unknown command"
$TS_CMD_SETARCH $ARCH -v /das/gibs/nicht >> $TS_OUTPUT 2>> $TS_ERRLOG
echo "exit: $?" >>$TS_OUTPUT

echo "###### noop uname -a" >>$TS_OUTPUT
uname_a=$(uname -srm)
$TS_CMD_SETARCH $ARCH -v uname -srm >> $TS_OUTPUT 2>> $TS_ERRLOG
sed -i "$ s@${uname_a}@uname -a unchanged@" $TS_OUTPUT

echo "###### almost all options" >>$TS_OUTPUT
$TS_CMD_SETARCH $ARCH -vRFZLXBIST3 echo "success" >> $TS_OUTPUT 2>> $TS_ERRLOG
ts_finalize_subtest


ts_init_subtest uname26
finmsg="" # for debugging 2.6 issues

echo "###### --uname-2.6 echo" >>$TS_OUTPUT
$TS_CMD_SETARCH $ARCH -v --uname-2.6 echo "2.6 worked" >> $TS_OUTPUT 2>&1
if [ $? -eq 0 ]; then
	expected='^2.6 worked$'
else
	# this may happen after execvp - gets written to stderr
	expected="^FATAL: kernel too old$"
	finmsg+=" echo"
fi
sed -i "$ s/$expected/2.6 works or kernel too old/" $TS_OUTPUT

echo "###### --uname-2.6 true, non-verbose" >>$TS_OUTPUT
$TS_CMD_SETARCH $ARCH --uname-2.6 true >> $TS_OUTPUT 2>&1
if [ $? -eq 0 ]; then
	echo "2.6 works or kernel too old" >> $TS_OUTPUT
else
	# this may happen after execvp - gets written to stderr
	expected="^FATAL: kernel too old$"
	sed -i "$ s/$expected/2.6 works or kernel too old/" $TS_OUTPUT
	finmsg+=" true"
fi

if [ -n "$finmsg" ]; then
	finmsg=$(echo unsupported --uname-2.6: $finmsg)
else
	uname26_seems_supported=yes
fi
ts_finalize_subtest "$finmsg"


# conditional subtest
if [ "$uname26_seems_supported" = "yes" ]; then
ts_init_subtest uname26-version
	tmp=$($TS_CMD_SETARCH $ARCH --uname-2.6 uname -r)
	if echo "$tmp" | grep -q "^2\.6\."; then
		echo "kernel version changed to 2.6" >> $TS_OUTPUT
	else
		echo "uname26 failed" >> $TS_OUTPUT
		echo "original kernel: $(uname -r)" >> $TS_OUTPUT
		echo "uname26 kernel:  $tmp" >> $TS_OUTPUT
	fi
ts_finalize_subtest
fi # conditional subtest

ts_finalize
